DRIVE DEVICE FOR VEHICLE

• Main Authors: TAGA YUTAKA, TABATA ATSUSHI, MIYAZAKI TERUBUMI
• Format: Patent
• Language: English
• Published: 30.03.2006
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To enable weight reduction of a storage chamber and a drive device by forming a groove formed on an inner circumference surface of the storage chamber on the inner circumference surface of the storage chamber which stores a piston member. SOLUTION: In a drive device 10 for a vehicle provided with a drive device output shaft 22 and a bearing 94 rotatably supporting the drive device output shaft 22, providing a brake B3 changing over a power transmission condition of the drive device 10 by connecting a ring gear R4 to a case 12 and selectively stopping rotation, and storing a brake piston 82 of the brake B3 in the storage chamber 80 formed by a case 12 and a sliding wall 78 projecting out of the case 12 in an axial direction, an axial direction groove 102 of which one end is positioned at a position facing the bearing 94 is formed on an inner circumference surface of the sliding wall 78. Consequently, lubricating oil lubricating the bearing 94 is discharged with guided by the groove 102. Since the groove 102 is formed on the slicing wall 78 forming the storage chamber 80 storing the brake piston 82, weight of the storage chamber 80 and the drive device 10 can be reduced. COPYRIGHT: (C)2006,JPO&NCIPI